On the September 8 episode of 'Idol School', Natty was very timid and reserved while practicing TWICE's ''OOH-AHH''. The teacher Park Jun hee asked Natty about the reason of her timidness.
Natty revealed, "During 'Sixteen', there were a lot of malicious comments saying that I'm ugly. I lost confidence ever since then."
Park Jun Hee responded with encouragement, and said, "Wherever you go, there are always going to be people who love and hate you. I hope your feelings won't be held down from malicious comments."